MSD Ignition Problem

[Pro Street Belvedere]

Guys,

I have a MSD 6AL...........a couple of weeks ago the box left me broke down
I did all the spark checks and its was the box, so instead of waiting two weeks to get it repaired I bought a new one, Installed it and it worked great for 1 hour.............And the new one left me broke down.

Do I just have bad luck or is it installed wrong, I checked all the connections and the only thing that I can see that might be wrong is the red main power is connected to starter block instead of to the battery and ground is to body not to battery. I am going to send both units back to MSD but I have to figure out why this has happened............Input please!!!!!

Thanks again gang,

Butch

 

[69 Runner]

The 6A in my Duster was installed wrong by the previous owner, and had the main power hooked directly to the alternator. Once I reconfigured everything hooking the main power and grounds to the battery, I had a high speed miss. But it went away and hasn't returned. Just drove it 1200+ miles without a hitch